sanderson



2 Sheets-Sheet 1.

(No Model.)

G. M. SANDERS-0N.

ROTARY ENGINE.

Elm-273,162; Patented Feb.27, 1883.

A k Q&/ a m?) m ///fl// 2 Sheets-Sheet 2.

(No Model.)

'0. M. SA'NDERSON.

. ROTARY ENGINE.

Patln'tedTb. 27,1883.

N. Pmas. mwum n w. Wnlhinglon. me.

UNITED STATES PATENT OEEIcE.

CHARLES M. SANDERSON, OF WINOHENDON, MASSACHUSETTS, ASSIGNOR OF ONE-HALFTO GEORGE N. GOODSPEED, OF SAME PLACE.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 273,162, dated February27, 1883.

Application filed November 28, 1882. (No model.)

To all whom it may concern Be it known that I, CHARLES M. SANDER- SON,acitizen of the United States, residing at Wiuchendon, in the county ofWorcester and State of Massachusetts, have invented certain new anduseful Improvements in R0- tary Engines; and I do declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being bad to the accompanying drawings, and tothe letters and figures ot'reference marked thereon, which form a partof this specification.

This invention relates to a rotary engine in which the motive power maybe supplied by the use of steam, compressed air, or other expansiblefluid; and it consists in the construction and arrangement of parts, ashereinafter more fully described and claimed. I

In the annexed drawings, illustrating the invention, Figure l is aperspective view of my improved rotary piston-engine. Fig. 2 is asectional side elevation of the same. Fig. 3 is an enlarged sectionaldetail. Fig. 4 represents an end View and a longitudinal section ofvalve.

Like letters are used to designate the same parts in the several views.

0 A represents a rotary cylinder, having suitable heads, at a, providedwith stuffing-boxes a, a, through'whioh passes a piston-rod, B, carryinga piston-head, b. At each end of the piston-rod B is a roller, e, thatruns on a camway or track, 0, as shown in Figs. 1 and 2. The cylinder Ais provided on one side with a solid journal or shaft, D, and on theother side it has a tubularjournal, E, having a recessed enlargement, e,that is firmly secured to said 40 cylinder, the tubularjournal E andsolid journal D being supported in suitable hearings in any convenientor well-known manner. The tubular journal or pipe E is connected by a 7coupling, (1, to the steam chest or cylinder F,

4 5 which has an inlet, f, for steam or compressed air. Within therecessed enlargement eof the pipe E is a rotary valve, G, having ahollow valve-stem or pipe, 9, that passes longitudinally through thepipe E and chest F, and

serves as an exhaust-exit. The valve G is eiroular in form, and isprovided with ports h i, as shown in Figs. 3 and 4, said ports beingarranged to register with ports k In, that are formed in the side oftherotary cylinder, as shown in'Fig. 3. It will be seen that when thevalve G is in such position that its inletport It registers with one ofthe ports k, steam or compressed air from the chest F will be admittedto the cylinder A at the back of the piston-head, so as to force thesameforward, causing the rollers c 0 at the ends of the piston-rod totravel along the eamway 0, thus rotating the cylinderA and shaft D. Whenthe cylinder A is rotated sufficiently to cause one of its ports toregister with the exhaustport 'i, the other port 70 will register withthe inlet-port h,thns admitting steam to one side of the piston-headwhile it is exhausted from the otherside. The piston-head is thus madeto move back and forth, while the rollers coon the ends of thepiston-rod travel along the eamway O, which is placed eccentric to thecylinder-journals D E, thereby rotating said cylinder. The power thusexerted by the retation of the cylinder may be taken from a pul ley, m,on the shaft D, or may be applied or transmitted in any convenientmanner. The rollers c c are journaled in bearings 19 1), that arecarried loosely on the ends of the pistonrod, as shown in Fig. 3. Aspiral spring, '0, is placed in an opening drilled in each end of thepiston-rod, and presses against the bearingp, so as to take up lostmotion if there should be any. At the inner end of the bearing 1) is anut, to, that hasa screw-threaded connection with the piston-rod, soasto be adjustable thereon to limit-the inward movement of theroller-bearing. At the end of the valve-stem or exhaust-pipe g is anotched lever, s, that may be turned to either side, so as to rotate thevalve Gr andreverse the engine, the lever being locked by the engagementof its notches with a pin, t, that limits its movement. It will beobserved that the rotary cylinder A and the camway or track 0 are placedeccentric to each other, so that as the piston-head is moved back andforth the rollers on the ends of the piston-rod always have a bearing onsaid track or eaniway. The bearings 11 p, in which these rollers arejournaled, may be elongated on either or both sides of the track, asshown in Figs. 2 and 3, to form guides by which the rollers are heldfrom lateral displacement.

The engine is supported by means of any suitable frame, and will operatein a vertical, horizontal, or inclined position, so that it may bereadily applied as a motive power for various purposes.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a rotary engine, the combination of the cam-track O, piston-rod B,carrying a pistonhead, b, and having rollers c c at each end, the rotarycylinder A, having ports It It, and :the rotary valve G, having ports72, 2' and hollow valve-stem g, substantially as shown and described.

2. In a rotary engine. the combination of the cylinder A, cam-track C,piston-rod B, passing through said cylinder, and having springs o andadjustable bearings 11 p at each end, and the rollers c c, journaled insaid bearings, sub stantially as shown and described.

3. In a rotary engine, the combination of the cam-track G, the rotarycylinder A, having ports 70 k, journal D, and hollow journal or pipe E,provided with recessed enlargement e, the piston-rod B, carryingpiston-head b and rollers o c, the chest or cylinder F, and the rotaryvalve G, having ports h i and hollow valve-stem g, substantially asshown and described.

In testimony whereof I affix my signature in presence 0t" two witnesses.

GHARLES M. SANDERSON.

Witnesses:

A. I. GooDsrEED, H. I. GOODSPEED.

